Mitsubishi Grandis. Manual — part 330
HEATER UNIT AND BLOWER ASSEMBLY
HEATER, AIR CONDITIONER AND VENTILATION
55-205
BLOWER ASSEMBLY DISASSEMBLY
AND REASSEMBLY
M1554017700016
INSPECTION
M1552014301373
AIR THERMO SENSOR CHECK
Check that the resistance shown in the graph is
almost satisfied when measuring the resistance
between the terminals under two or more different
temperature conditions.
NOTE: The temperature condition in checking
should be within the range shown.
AC310131AB
3
5
4
9
8
7
6
2
10
1
Removal steps
1.
Front blower motor
2.
Front power transistor
3.
Inside/outside air selection damper
motor
4.
Inside/outside air selection damper
lever A
5.
Inside/outside air selection damper
lever B
6.
Clean air filter
7.
Air intake plate
8.
Inside air damper
9.
Heater blower case upper
10. Heater blower case lower
AC209196
-10
0
10
20
30
40
0
2
4
6
8
AB
RESISTANCE
TEMPERATURE (˚C)
(k
Ω)
MODE SELECTION DAMPER CONTROL MOTOR, AIR MIXING DAMPER CONTROL MOTOR,
HEATER, AIR CONDITIONER AND VENTILATION
55-206
PTC HEATER CHECK <VEHICLE WITH
REAR HEATER OR DUAL AUTOMATIC
A/C>
Check that there is continuity between the connector
terminals 1 and 2 as well as 3 and 4.
MODE SELECTION DAMPER CONTROL MOTOR, AIR
MIXING DAMPER CONTROL MOTOR, OUTSIDE/INSIDE AIR
SELECTION DAMPER CONTROL MOTOR, POWER
TRANSISTOR AND BLOWER MOTOR
REMOVAL AND INSTALLATION
M1554014900022
1 2 3 4
AC303592
AC310137
4
1
2
3
5
AB
MODE SELECTION DAMPER CONTROL MOTOR, AIR MIXING DAMPER CONTROL MOTOR, OUTSIDE/INSIDE
HEATER, AIR CONDITIONER AND VENTILATION
55-207
REMOVAL SERVICE POINT
<<A>> FRONT AIR MIX DAMPER
CONTROL MOTOR REMOVAL
1. Turn the temperature control dial to the MAX
COOL position.
2. Turn the air outlet changeover mode to the FACE
or FACE/FOOT position, and then turn it to the
FOOT position.
3. Cut the water proof cover away from the groove
section.
4. Rotate the front air mix damper control motor to
the direction B by approximately 20
°, and remove
it while pushing the air mixing control link A.
INSTALLATION SERVICE POINT
>>A<< FRONT AIR MIX DAMPER
CONTROL MOTOR INSTALLATION
1. Install the front air mix damper control motor to
the link and rotate it to the direction C by
approximately 20
°.
2. Temporarily secure the front air mix damper motor
by the screw.
3. Operate the blower by maximum air volume,
check the air leak from FACE air outlet. If there is
the air leak, rotate the air mix damper control
motor to the direction C to prevent the leak.
Mode selection damper control
motor removal step
•
Front deck cross member and
heater unit assembly (Refer to
1.
Mode selection damper control
motor
Front air mixing damper control
motor removal step
•
Cowl side trim (Refer to GROUP
52A, Interior Trim
•
Selector lever, selector lever panel
and glove box (Refer to GROUP
52A, Instrument Panel
<<A>>
>>A<<
2.
Front air mixing damper control
motor
Outside/inside air selection
damper control motor and front
power transistor removal step
•
Cowl side trim (Refer to GROUP
52A, Interior Trim
•
Selector lever, selector lever panel
and glove box (Refer to GROUP
52A, Instrument Panel
3.
Front power transistor
4.
Outside/inside air selection damper
control motor
Front blower motor removal
step
5.
Front blower motor
AC303011
Water proof cover
AB
Groove section
Corner sensor ECU
AC310135
Air mixing control link A
AB
B
AC310138
Air mixing control link A
C
AB
AC310139
Air mixing control link A
C
AB
B
MODE SELECTION DAMPER CONTROL MOTOR, AIR MIXING DAMPER CONTROL MOTOR,
HEATER, AIR CONDITIONER AND VENTILATION
55-208
4. Check that there is the pin at the end of hole. If
there is not, move the front air mix damper control
motor so that the pin is positioned at the end of
hole.
5. Retighten the screw.
6. Drill in the section shown.
7. Secure the water proof cover with its replacement
bracket.
INSPECTION
M1552014301384
CHECK THE AIR OUTLET CHANGEOVER
DAMPER MOTOR AND POTENTIOMETER
CAUTION
Stop energizing when the lever is set to the
operation stopping position.
MOTOR CHECK
Potentiometer check
When the resistance value between connector
terminals 3 and 5 is measured while checking the
motor, check that the resistance value changes
gradually within the standard value.
Standard value: 0.80 (FACE)
− 4.80 (DEF) kΩ
CHECK THE FRONT AIR MIX DAMPER
MOTOR AND POTENTIOMETER
CAUTION
Stop energizing when the lever is set to the
operation stopping position.
AC310140 AB
Front air mixing damper motor
Hole
Pin
AC303196AB
Water proof cover
Corner sensor ECU
AC303197
Replacement bracket
Water proof cover
AB
Corner sensor ECU
Battery
connection
(+) terminal
Battery
connection
(-) terminal
Lever operation
2
1
Rotate to the DEF
side
1
2
Rotate to the
FACE side
AC311457
1 2 3 4 5 6 7
AB
DEF position
FACE position
AC311458
MAX
HOT
MAX
COOL
AB
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